Tested: Windows 11’s 2026 feature update is just 174KB, but your PC still needs 6.5GB for Windows 11 26H2 if it’s on 23H2
Windows 11 24H2, 25H2 and 26H2 share one servicing branch, so 26H2 is a tiny master switch for up-to-date PCs. Windows 11 23H2 is on the older 22H2/23H2 branch, so it needs a full OS swap built on a 5.3GB base image, and 23H2 Enterprise support ends on November 10. The post Tested: Windows 11’s 2026 feature update is…
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